(deffacts MAIN::obstaculos
;  (obstaculo-r (pos-x 2)(pos-y 4))
;  (obstaculo-r (pos-x 3)(pos-y 4))
;  (obstaculo-r (pos-x 2)(pos-y 5))
;  (obstaculo-r (pos-x 3)(pos-y 5))
  (placeholder)
)